September 2010
Intermediate to advanced
1704 pages
111h 8m
English
To demonstrate the relationship between a trigger and the transaction nesting level, you can use the following SQL code to create a trigger on the employee table:

The purpose of this trigger is simply to show the state of the @@trancount within the trigger as the deletion is taking place.
If you now execute code for implied and explicit transactions, you can see the values of @@trancount and behavior of the batch. First, here’s the implied transaction:

The results of this are as follows:
Because no transaction ...